| 摘要 |
PROBLEM TO BE SOLVED: To solve a bearing torque gain following depositions of degraded grease matters attributed to abnormal heating within a bearing.SOLUTION: The provided lubricant composition used within a bearing unit for a hard disc drive swing arm is obtained by mixing, as a thickener, an urea compound with a base oil including an aromatic ester oil; the provided bearing unit for a hard disc drive swing arm, furthermore, comprises an axle member having a flange unit at one end of the axial direction thereof and a pair of bearings configured on the peripheral of the axle member in parallel thereto and each comprising an inner race, an outer race, and multiple rolling elements configured between the inner race and outer race. |
